PDB Statistics: PDB Data Distribution by Molecular Weight (Structure)

All macromolecules, small molecules, and ions are included, except for water molecules. Molecular weight is calculated for all atoms, including those not observed in the experiment. Molecular weight of all non-water atoms in the asymmetric unit.

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Molecular Weight (Daltons)Number of Entries
< 20K31120
20K - 40K44426
40K - 60K32643
60K - 80K19988
80K - 100K13899
100K - 120K10016
120K - 140K6698
140K - 160K5132
160K - 180K4311
180K - 200K3131
200K - 220K2511
220K - 240K2022
240K - 260K1523
260K - 280K1346
280K - 300K1025
300K - 320K825
320K - 340K792
340K - 360K755
360K - 380K597
>= 380K9335